Eml synthesizers

Hello there.

My EML101 will play in tune with itself, but I can only tune it to
A440 by running some external voltage into the Osc Control External
Input. Is there an internal trimpot that controls the master tune ?

Would it be possible to add a master tuning pot on the face of the unit??


Also, does anyone know a tech who would go through the basic
tuning/calibration proceedures as outlined in the service documents so
that the oscillators and filter all track perfectly?


Thanks!!

-Robert Scott
(540) 842-5985